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From: Pavel Machek <pavel@denx.de>
To: stable@kernel.org, kernel list <linux-kernel@vger.kernel.org>,
	gustavo@embeddedor.com, davem@davemloft.net,
	gregkh@linuxfoundation.org
Subject: net: atm: Spectre v1 fix introduced bug in bcb964012d1b in -stable
Date: Mon, 20 May 2019 14:40:14 +0200	[thread overview]
Message-ID: <20190520124014.GA5205@amd> (raw)

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In lecd_attach, if arg is < 0, it was treated as 0. Spectre v1 fix
changed that. Bug does not exist in mainline AFAICT.

Signed-off-by: Pavel Machek <pavel@denx.de>
# for 4.19.y

diff --git a/net/atm/lec.c b/net/atm/lec.c
index ad4f829193f0..ed279cd912f4 100644
--- a/net/atm/lec.c
+++ b/net/atm/lec.c
@@ -731,7 +731,7 @@ static int lecd_attach(struct atm_vcc *vcc, int arg)
 		i = arg;
 	if (arg >= MAX_LEC_ITF)
 		return -EINVAL;
-	i = array_index_nospec(arg, MAX_LEC_ITF);
+	i = array_index_nospec(i, MAX_LEC_ITF);
 	if (!dev_lec[i]) {
 		int size;
 
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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             reply	other threads:[~2019-05-20 12:40 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-20 12:40 Pavel Machek [this message]
2019-05-20 14:00 ` net: atm: Spectre v1 fix introduced bug in bcb964012d1b in -stable Greg KH
2019-05-20 14:26   ` Gustavo A. R. Silva
2019-05-20 21:00     ` Pavel Machek
2019-05-20 16:15   ` Pavel Machek
2019-05-20 14:15 ` Gustavo A. R. Silva
2019-05-20 16:15   ` Pavel Machek
2019-05-20 16:54     ` Gustavo A. R. Silva

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